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/******************************************************************************
* $Id: ogrcurve.cpp 16574 2009-03-14 13:09:10Z rouault $
*
* Project: OpenGIS Simple Features Reference Implementation
* Purpose: The OGRCurve geometry class.
* Author: Frank Warmerdam, warmerda@home.com
*
******************************************************************************
* Copyright (c) 1999, Frank Warmerdam
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "ogr_geometry.h"
#include "ogr_p.h"
CPL_CVSID("$Id: ogrcurve.cpp 16574 2009-03-14 13:09:10Z rouault $");
OGRCurve::OGRCurve()
{
}
OGRCurve::~OGRCurve()
{
}
/************************************************************************/
/* get_IsClosed() */
/************************************************************************/
/**
* \brief Return TRUE if curve is closed.
*
* Tests if a curve is closed. A curve is closed if its start point is
* equal to its end point.
*
* This method relates to the SFCOM ICurve::get_IsClosed() method.
*
* @return TRUE if closed, else FALSE.
*/
int OGRCurve::get_IsClosed() const
{
OGRPoint oStartPoint, oEndPoint;
StartPoint( &oStartPoint );
EndPoint( &oEndPoint );
if( oStartPoint.getX() == oEndPoint.getX()
&& oStartPoint.getY() == oEndPoint.getY() )
{
return TRUE;
}
else
{
return FALSE;
}
}
/**
* \fn double OGRCurve::get_Length() const;
*
* \brief Returns the length of the curve.
*
* This method relates to the SFCOM ICurve::get_Length() method.
*
* @return the length of the curve, zero if the curve hasn't been
* initialized.
*/
/**
* \fn void OGRCurve::StartPoint( OGRPoint * poPoint ) const;
*
* \brief Return the curve start point.
*
* This method relates to the SF COM ICurve::get_StartPoint() method.
*
* @param poPoint the point to be assigned the start location.
*/
/**
* \fn void OGRCurve::EndPoint( OGRPoint * poPoint ) const;
*
* \brief Return the curve end point.
*
* This method relates to the SF COM ICurve::get_EndPoint() method.
*
* @param poPoint the point to be assigned the end location.
*/
/**
* \fn void OGRCurve::Value( double dfDistance, OGRPoint * poPoint ) const;
*
* \brief Fetch point at given distance along curve.
*
* This method relates to the SF COM ICurve::get_Value() method.
*
* @param dfDistance distance along the curve at which to sample position.
* This distance should be between zero and get_Length()
* for this curve.
* @param poPoint the point to be assigned the curve position.
*/
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